1. In this way you can cut any onion - red, white, onion, shallot. 2. Peel the onion, cut off the bottom, but save the tail. Cut the onion in half. 3. Holding the onion by the tail, make longitudinal cuts, not reaching the tail, so that the onion does not fall apart into petals. 4. Then cut the onion into cubes of the desired size.